diff --git a/include/asm-x86_64/irq.h b/include/asm-x86_64/irq.h
index eb3b7aa..4482657 100644
--- a/include/asm-x86_64/irq.h
+++ b/include/asm-x86_64/irq.h
@@ -57,4 +57,6 @@
 extern void fixup_irqs(cpumask_t map);
 #endif
 
+#define __ARCH_HAS_DO_SOFTIRQ 1
+
 #endif /* _ASM_IRQ_H */